driver: replace dev_request_mem_region with dev_request_mem_resource ...

dev_request_mem_region doesn't work properly one some SoCs on which
PTR_ERR() values clash with valid return values from dev_request_mem_region.
Replace them with dev_request_mem_resource where possible.

This patch has been generated with the following semantic patch:

// <smpl>
@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
...
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
-	return PTR_ERR(io);
-}
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
-if (IS_ERR(io)) {
-	ret = PTR_ERR(io);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores)) {
+	ret = PTR_ERR(iores);
...
}
+io = IOMEM(iores->start);
...+>
}

@@
expression d;
expression n;
expression io;
identifier func;
@@
func(...) {
+struct resource *iores;
<+...
-io = dev_request_mem_region(d, n);
+iores = dev_request_mem_resource(d, n);
+if (IS_ERR(iores))
+	return PTR_ERR(iores);
+io = IOMEM(iores->start);
...+>
}

@@
identifier func;
@@
func(...) {
<+...
struct resource *iores;
-struct resource *iores;
...+>
}
// </smpl>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bcm2835: introduce mach-bcm283x ...

This patch changes the most part of mach-bcm2835 to mach-bcm283x. This
prepares to add RPi2 support which is a bcm2836. This patch changes the
Kconfig entry namens to BCM283X for drivers only. These drivers should
working the same in bcm2836.

While updating defconfig I added LED support/trigger option.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clock: incorporate dummy clocksource into core clock code ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: Reuse init_clock() return value for clocksource drivers ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

resource: Let dev_request_mem_region return an error pointer ...

For all users fix or add the error check.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: add driver for Canon DIGIC timer ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: mvebu: split initialization for Armada 370/XP ...

Timers found on Marvell Armada 370 and XP require different setup.
While timer clock on Armada 370 can be derived from a divided
reference clocks, Armada XP always uses a 25MHz reference.

This also updates compatibles to destinguish timers for both SoCs
and fixes some whitespace issues on defines.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

clocksource: add uemd clocksource ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: add dummy software-only clocksource ...

This driver is very handy for initial barebox porting.
It was used for running barebox on DiGiC2-based camera
and initial porting barebox to Loongson-1 and ar9331.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Alexander Shiyan <shc_work@mail.ru>

ARM: bcm2835: register the clocksource driver earlier ...

RPi's mailbox driver is used early and it needs clock functions to
handle timeouts.

Promote to a core_initcall().

Signed-off-by: Andre Heider <a.heider@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: arm_smp_twd: Add devicetree support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: mvebu: add DT support ...

This adds device tree support to mvebu timer and also converts clk_get
to clk_lookup to find TCLK without device name reference.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: mvebu: lookup clock by physbase ...

This converts Armada 370/XP SoC init to register tclk alias
for timer by physbase instead of name.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: orion: add DT support ...

This adds device tree support to orion timer and also converts clk_get
to clk_lookup to find TCLK without device name reference.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: orion: lookup clock by physbase ...

This converts Kirkwood and Dove SoC init to register tclk alias
for timer by physbase instead of name.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: fix Marvell timer read-back value ...

Clocksource read callback expects incrementing timer values, while
internal timer on Marvell SoCs counts backwards. Fix value returned
by Marvell MVEBU and Orion clocksource drivers.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm: initial support for Marvell Dove SoCs ...

This commit adds minimal support for the Marvell Dove SoC (88AP510) as
first SoC of the Marvell Orion family. Orion SoCs have a different timer,
therefore current mach-mvebu and Armada 370/XP Kconfig and Makefiles are
slightly modified and a new clocksource drivers is added.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm: initial support for Marvell Armada 370/XP SoCs ...

This commit adds minimal support for the Armada 370 and Armada XP SoCs
from Marvell.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: clps711x: Add clocksource driver ...

This patch adds clocksource driver for CLPS711X targets and adds
support to platform to use this new driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

sp804: introduce amba_is_arm_sp804 to detect if the sp804 is present at the address ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clocksource: add ARM AMBA SP804 support ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

BCM2835: add clocksource driver ...

Signed-off-by: Carlo Caione <carlo.caione@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm: move nomadik timer to drivers/clocksource ...

as this timer is shared with multiple arch

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

arm: add generic smp twd timer ...

on Cortex A9 and Cortex A5 we have a generic timer which we can use as
clocksource

Limit the timer frequency to < 25Mhz

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>